Power Supply Plugged In And Battery Fully Charged No Power
We have 2 of these laptops at work and yesterday one of them wouldn't turn on. The yellow adapter light blinks in a cycle of 3 times but computer will not turn on. Tried power supply and fully charged battery from the other working computer, and nothing works. Computer will power up at all.
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1. Unplug the machine and remove the battery. 2. Hold down the power button for 30 seconds with the battery out and unplugged. 3. Replace the battery and plug it back in. 4. Try and power it up. 5. If it doesn't work, there is the potential that the battery is dead and the AC adapter may be broken. This would prevent the battery from being charged and it wouldn't work when it was plugged into the wall, so try and borrow an adapter from the same laptop to test this. 6. Hopefully something worked, because if it didn't, the laptop may bed dead. Hope this helps!
You need to replace your old battery. Don't over charged your battery. If you are using your laptop in your house it is better not to use it with battery. Just use the power adaptor/supply only. Then make sure you will drain the battery let say once a week. =)
Remove the battery and try to turn on the laptop without the cord plugged in to allow the device to completely discharge. Put the battery back in and hold the power button in for 45 seconds, the lights should flash and then turn the laptop on normally. This always works for my laptop.
Those may have 1 or 2 different problems.
Cold Solder joint on Mobo.
Bad DC Power Jack.
1: if it is the Cold Solder, you can reflow the solder and be done with it.
2: if it is the DC power jack, It should be replaced.
For simplicity lets call them DC(A) and DC(B)
There are 3 connections to it. Gnd, DC (A), and DC (B).
When the powersupply is plugged in, contacts (A) touch to send +DC to the laptop. (B) is open.
When the laptop is using battery power, contacts (B) touch to send power from the battery through the system.
Over a period of time (inserting and removing the DC Power Cord), the contacts become fatigued, or oxidized and the DC(B) never closes - so it won't work from DC Battery.
RATE ME - if it helps